Compiler Error CS0117
'type' does not contain a definition for 'identifier'
This error occurs when a reference is made to a member that does not exist for the data type.
Several common situations can generate this error:
-
Calling a method that does not exist.
-
Using the Item property followed by an indexer.
-
Calling a qualified method when a class name and its enclosing namespace name are the same.
-
Calling an interface written in a language that supports static members inside interfaces.
The following sample generates CS0117.
// CS0117_1.cs
namespace MyNamespace
{
public class MyClass
{
public static void Main()
{
int i;
i = i.get(); // CS0117
}
}
}
Example
In this example, the Item property is used with an indexer. In C#, you can use a property or an indexer to access a member, but not both. The following sample generates CS0117.
// CS0117_2.cs
using System;
using System.Collections;
class Test
{
public static void Main()
{
ArrayList al = new ArrayList();
al.Add( new Test() );
Console.WriteLine("{0}", al.Item[0]); // CS0117
Console.WriteLine("{0}", al[0]); // OK
}
}
CS0017 also occurs if you use a library written in a language that allows static members in interfaces, and you try to access the static member from C#.
// CS0117_3.jsl
// compile with: /target:library
public interface IMyJSharpInterface
{
static int MyStaticMember = 0;
void NonStaticMember();
}
The following sample generates CS0117.
// CS0117_4.cs
// compile with: /reference:CS0117_3.dll
class MyCSharpClass : IMyJSharpInterface
{
public void NonStaticMember() {}
public static void Main()
{
IMyJSharpInterface myObj = new MyCSharpClass();
myObj.NonStaticMember();
int i = myObj.MyStaticMember; // CS0117
}
}
